Senna gets a lot of credit for protesting the lack of safety, but he was a supreme hypocrite. He was more than happy to ram his competitors off the track, bullying them so everyone would get out of his way for fear of blowing their budget fixing crash damage - and he'd get clean laps.

FIA could have shut it down at any point but likely didn't because of how many F1 fans he brought in from Brazil and South America.